A Comparison of Outcomes in Acute Perilunate Injuries: Systematic Review and Meta-Analysis of Treatment Approaches.

Background: Perilunate dislocations (PLD) and fracture-dislocations (PLFD) comprise a spectrum of high-energy wrist injuries. The purpose of this review was to review operative strategies for perilunate injuries based on approach and compare outcomes.

Methods: A systematic review of literature on PLD and fracture-dislocations was carried out according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).

Cement Burn of the Skin Following Total Knee Arthroplasty Case Report and Review of the Literature.

Introduction: Cement burns following arthroplasty pro-cedures are a rare but serious complication. To the authors' knowledge, this report is the first of its kind in total knee arthroplasty.

Case: A 61-year-old female underwent an otherwise rou-tine left total knee arthroplasty.

"Reverse roussouly": cervicothoracic curvature ratios define characteristic shapes in adult cervical deformity.

Purpose: To investigate normal curvature ratios of the cervicothoracic spine and to establish radiographic thresholds for severe myelopathy and disability, within the context of shape.

Methods: Adult cervical deformity (CD) patients undergoing cervical fusion were included. C2-C7 Cobb angle (CL) and thoracic kyphosis (TK), using T2-T12 Cobb angle, were used as a ratio, ranging from -1 to + 1.

Interfacet distance at L4 is increased in spines with high-pelvic incidence.

Pelvic incidence (PI) is an angular measurement linked to spinal pathologies. There is an increasing distance between facet joints moving caudally down the sagittal plane of the spine. We defined pedicle divergence (PD) as the ratio of interfacet distance (IFD) between adjacent levels.

Treatment Outcomes in American Football Players After Intervertebral Disk Herniation: Systematic Review and Meta-Analysis.

Background: American football players are at increased risk for many forms of spinal injury. Intervertebral disk herniations are particularly concerning as they are the leading cause of days lost to injury and can have long-term effects on player careers. Disk herniation management plays a major role in the likelihood and success of return-to-play (RTP).

Symptomatic Epidural Hematoma After Elective Cervical Spine Surgery: Incidence, Timing, Risk Factors, and Associated Complications.

Background: As the rate of elective cervical spine surgery increases, studies of complications may improve quality of care. Symptomatic postoperative cervical epidural hematomas (PCEH) are rare but result in significant morbidity. Because of their low incidence, the risk factors and complications associated with symptomatic PCEH remain unclear.

Postoperative Prophylactic Antibiotics in Spine Surgery: A Propensity-Matched Analysis.

Background: Surgical site infections are common and costly complications after spine surgery. Prophylactic antibiotics are the standard of care; however, the appropriate duration of antibiotics has yet to be adequately addressed. We sought to determine whether the duration of antibiotic administration (preoperatively only versus preoperatively and for 24 hours postoperatively) impacts postoperative infection rates.

Is Timing to Surgery an Independent Risk Factor for Complications Following Operative Treatment of Periprosthetic Lower Extremity Fractures?

Objective: To identify whether timing to surgery was related to major 30-day morbidity and mortality rates in periprosthetic hip and knee fractures [OTA/AO 3 (IV.3, V.3), OTA/AO 4 (V4)].

Unicompartmental Knee Arthroplasty in Octogenarians versus Younger Patients: A Comparison of 30-Day Outcomes.

As the United States' octogenarian population (persons 80-89 years of age) continues to grow, understanding the risk profile of surgical procedures in elderly patients becomes increasingly important. The purpose of this study was to compare 30-day outcomes following unicompartmental knee arthroplasty (UKA) in octogenarians with those in younger patients. The American College of Surgeons National Surgical Quality Improvement Program database was queried.

The Incremental Cost of Inpatient Venous Thromboembolism After Hip Fracture Surgery.

Objectives: To (1) identify trends in the rates of deep venous thrombosis (DVT) and pulmonary embolism (PE) and (2) calculate the additional incremental inpatient cost and length of stay associated with venous thromboembolism (VTE) after hip fracture surgery.

Design: Retrospective database analysis.

Setting: Hospital discharge data.

Pelvic Incidence in Spines With 4 and 6 Lumbar Vertebrae.

Study Design: Anatomical study.

Objectives: This study was conducted to determine the prevalence of abnormal lumbar vertebrae (4 and 6) and note any differences in pelvic incidence (PI) between spines with 4, 5, and 6 lumbar vertebrae.

Methods: We screened 2980 dry cadaveric specimens from an osteological collection.

Incidence of complete spinal instrumentation removal following surgery for spinal deformity: a 22-year single institution study.

The aim of this study was to define the incidence of complete implant removal following surgical correction of spinal deformity in pediatric patients over a 22-year period and identify possible risk factors. A retrospective review of our Pediatric Orthopedic Spine Database between 1992 and 2016 was performed. We included patients undergoing complete implant removal following scoliosis correction surgery with a minimum of 2-year follow-up.

Correlation between the distance from the pubic symphysis to the sacrum with pelvic incidence.

Introduction: The distance between the pubic symphysis and sacrococcygeal joint has been noted as an important parameter in evaluating pelvic tilt in an anteroposterior (AP) radiograph. Similarly, pelvic incidence measures the sagittal balance of the pelvis and is influenced by pelvic rotation. The relationship between these 2 parameters is unknown and could affect interpretation of pelvic AP radiographs.

Differences in Cross-Sectional Intervertebral Foraminal Area From C3 to C7.

Study Design: Anatomical comparative study.

Objectives: Few studies have evaluated foraminal areas in the cervical spine without degenerative changes. The purpose of this study was to determine and compare the mean cross-sectional foraminal areas between the C3/4, C4/5, C5/6, and C6/7 levels while also analyzing specimens for differences between sexes and races.

Relationship Between Foraminal Area and Degenerative Changes in the Lower Cervical Spine With Implications for C5 Nerve Root Palsy.

Preoperative foraminal stenosis at C4/5 is a predisposing risk factor for C5 nerve root palsy in elderly patients. However, the area of the C4/5 intervertebral foramen and its relationship to the extent of arthrosis and lower foraminal areas (C5/6 and C6/7) are unknown. The authors sought to compare the areas of the cervical intervertebral foramen at the C4/5, C5/6, and C6/7 levels, noting any differences across race or sex and the relationship between foraminal area and arthrosis grade.

Pelvic Incidence Is Associated With Sacral Curvature, Sacroiliac Joint Angulation, and Sacral Ala Width.

Study Design: Cross-sectional anatomical study in dry cadaveric specimens.

Objective: This study evaluates how the sacroiliac (SI) joint angulation, midsagittal sacral curvature, and sacral ala width relate to pelvic incidence (PI).

Summary Of Background Data: Numerous spinopelvic pathologies have been linked with pelvic incidence; however, the manner in which sacral morphology fits into this association is largely unknown.

Preoperative Hyponatremia Is Associated with Reoperation and Prolonged Length of Hospital Stay following Total Knee Arthroplasty.

Hyponatremia is a risk factor for adverse surgical outcomes, but limited information is available on the prognosis of hyponatremic patients who undergo total knee arthroplasty (TKA). The purpose of this investigation was to compare the incidence of major morbidity (MM), 30-day readmission, 30-day reoperation, and length of hospital stay (LOS) between normonatremic and hypontremic TKA patients.The American College of Surgeons National Surgical Quality Improvement Program database was used to identify all primary TKA procedures.

Hospital for Special Surgery ACL Registry: 2-Year Outcomes Suggest Low Revision and Return to OR Rates.

Background: Anterior cruciate ligament (ACL) injuries are among the most common knee injuries. Patient outcomes, rate of subsequent operations, and rate of subsequent ACL reconstruction following primary ACL reconstruction need to be evaluated.

Questions/purposes: This study was designed to answer the following questions: (1) What is the return to surgery (OR) rate following primary ACL reconstruction and (2) what is the revision ACL reconstruction rate?

Methods: Data was drawn from the Hospital for Special Surgery (HSS) ACL Registry.

ABO Blood Group Is a Predictor for the Development of Venous Thromboembolism After Total Joint Arthroplasty.

Background: The study's purpose was to determine if there is an association between ABO blood group and the development of symptomatic venous thromboembolism (VTE) after total joint arthroplasty (TJA).

Methods: A total of 28,025 patients who underwent primary TJA at a single health care system from 2000 to 2014 were retrospectively reviewed from electronic records. Patients who experienced a symptomatic VTE were identified.

Historical Perspective: Henry H. Bohlman (1937-2010): The Father of Contemporary Spine Surgery.

The incredible career of Henry H. Bohlman, MD, spanned over four decades at University Hospitals Case Medical Center. He was an innovator and pioneer, designing several techniques for the management of several spinal pathologies while advocating the anterior approach to the spine.

The effects of medial synovial plica excision with and without lateral retinacular release on adolescents with anterior knee pain.

Objectives: To describe the functional outcomes in patients aged ≤18 years with anterior knee pain treated with medial plica excision with or without lateral release.

Methods: We identified 135 patients including 30 bilateral cases (165 knees) with a mean ± SD age of 15.1 ± 2.

Do heads of government age more quickly? Observational study comparing mortality between elected leaders and runners-up in national elections of 17 countries.

Objectives: To determine whether being elected to head of government is associated with accelerated mortality by studying survival differences between people elected to office and unelected runner-up candidates who never served.

Design: Observational study.

Setting: Historical survival data on elected and runner-up candidates in parliamentary or presidential elections in Australia, Austria, Canada, Denmark, Finland, France, Germany, Greece, Ireland, Italy, New Zealand, Norway, Poland, Spain, Sweden, United Kingdom, and United States, from 1722 to 2015.